Thesis (M.S.)--Florida State University, 2003. / Advisor: William Parkingson, Florida State University, College of Arts and Sciences, Dept. of Anthropology. Title and description from dissertation home page (viewed Mar. 1, 2004). Includes bibliographical references.

Thesis (Ph. D.)--University of Chicago, Dept. of the Geophysical Sciences, June 2000. / Includes bibliographical references. Also available on the Internet.

Thesis (M.S.)--Brigham Young University. Dept. of Geology, 2005. / Includes bibliographical references (leaves 25-35).

Thesis (doctoral)--In Universitate Viadrina, 1848. / Vita. Includes bibliographical references.

Fossil plant remains from the "upper sedimentary-unit" of the Hazelton Group were investigated in order to attempt the assignment of a precise age to the strata. Collections of leaves and specimens for plant microfossil analysis were collected in the Hazelton area, and were supplemented by leaf collections loaned by the Geological Survey of Canada. Intensive maceration of rock specimens failed to yield sufficient microfossils for dating or correlation, and subsequent work was limited to the analysis of megafossils. Identification of leaves and other remains resulted in the discovery of one new species and the recognition of 7 species previously unreported in the Hazelton flora. Statistical analyses and correlations with other floras have led to the conclusion that, the flora from the "upper sedimentary unit" of the Hazelton Group is late Jurassic to early Cretaceous in age, encompassing the stages Portlandian to Neocomian inclusive. / Science, Faculty of / Earth, Ocean and Atmospheric Sciences, Department of / Graduate

Lower and Middle Tertiary continental sedimentary rocks comprise the fill in a large structural basin adjacent to the Georgia Depression in southwestern British Columbia and northwestern Washington. Upper Cretaceous continental sedimentary rocks apparently underlie the entire basin. Outcrops of Tertiary rocks are restricted to the north, south and east margins where they are dipping into the basin and overlying older rocks rimming the basin. Relationships to the west are obscured by the Strait of Georgia, but apparently the Whatcom basin is part of, and contiguous with, the Georgia depression. Over most of the area, surface cover is Pleistocene and Recent sediments. Investigations of plant microfossils from two deep basin wells indicate three distinct floras in pre-Pleistocene rocks. Basal portions contain a relatively small Upper Cretaceous floral assemblage. Above this are Middle and probably Upper Eocene assemblages. Upper parts of the section contain a predominantly dicotyledonous Miocene assemblage. Palynological study of the outcrops indicates a Middle to Upper Eocene age for all except the Brothers Creek outcrop on the north side of Burrard Inlet, which appears to be Upper Cretaceous. Miocene rocks are found only in the wells, and apparently do not crop out. Eocene assemblages contain Pistillipollenites and Platycarya together with significant numbers of Cactricosisporites and Anemia spores, and suggest a warm temperate to subtropical climate. Miocene assemblages are generally characterized by Glyptostrobus, Pterocarya, Ulmus-Zelkoya and Fagus and several other dicotyledonous pollen. Miocene assemblages indicate a more temperate aspect than those of the Eocene. / Science, Faculty of / Earth, Ocean and Atmospheric Sciences, Department of / Graduate

No description available.

No description available.

The Early Cretaceous (Berriasian) Hope Bay flora is one of the most diverse assemblages from the Mesozoic of Antarctica. Collected in 1902 by the Swedish Antarctic Expedition of 1901-1903 from Hope Bay at the northern tip of the Antarctic Peninsula, and described in 1913 by T. G. Halle, it has served as a classic reference collection for Jurassic and Cretaceous southern hemisphere paleobotanical studies. Because the systematics of the flora were outdated by the enormous advances in our understanding of fossil plants during the last 70 years, it was in serious need of revision. This revision has reduced the number of taxa from 61 to 42 species. Newly erected species are Otozamites rowleyi, Kachchhia schopfii, Ticoa jeffersonii, and Araucaria antarctica. New combinations are Todites grahamii and Thinnfeldia salicifolia. The genera Kachchhia, Ticoa, and Weltrichia are new occurrences at Hope Bay. Represented in the flora are members of the Hepatophyta, Arthrophyta, Pteridophyta, Pteridospermophyta, Cycadophyta, Cycadeoidophyta, and Coniferophyta. Not surprisingly, when compared with other Gondwana floras, the Hope Bay flora shows the greatest similarity with other Antarctic floras. There is also a close affinity with the floras of South America and New Zealand. Taxonomic similarity between these floras is best explained by paleogeographic proximity. / text

Call number: LD2668 .T4 1963 S674 / Master of Science